could you tell me (what it is)that prevents her from being as hap_英语解答

could you tell me (what it is)that prevents her from being as happy as before这句啥意思?为啥不how
how it is?

人气：126 ℃　时间：2019-11-09 20:22:00

解答

你能告诉我什么让她不像从前一样开心吗?
(what it is)that prevents her from being as happy as before 这句中有强调句型,what 作句子主语.